Websites that teach core fundamentals in electrical and mechanical design and engineering.
This site provides a series of online textbooks covering electricity and electronics. The information provided is great for both students and hobbyists who are looking to expand their knowledge in this field.
Learning Circuits will help younger children (and others) to learn about circuits and electricity.
A website for anyone wishing to learn about electronics or build simple projects. Written for beginners but used by many others as a quick reference.